The arrow of time is based on the second law of thermodynamics. As I understand it, the second law of thermodynamics is that things get more random over time, and that is how the natural order of things within the universe we live in, works. They call this entropy or disorder, and this increases with time. An example is, a building which is left untouched will eventually decay into its surroundings, it will disintegrate into a more chaotic state and its highly unlikely that the building will become more orderly over time. This is because there is more ways for a system to be disorderly than orderly. There can be many ways for something to break, but only one way to put it back together again, this is another example.
I’m going to try to socialise this concept, because we as human beings are bounded by the laws of physics. Our systems and how we interact with the world around us are determined by the physical restrictions outlined in scientific principles. The fact that time naturally moves in one direction is evidence of this because no one yet has been able to prove that time can be manipulated. The concept that there are more ways for a system to be disorderly than orderly is also interesting because in life, governed by the systems humans created, there are so many ways to fail. Also, so many more people seem to fail at life than succeed. It seems virtually impossible for everyone to live their best life possible and achieve their dreams, as there seems so many ways for your dreams to be ruined.
I know this is a bit of a downer, but if the second law of thermodynamics states that there is much higher likely hood of experiencing entropy than for a system to fix itself, then in life there would be much more ways for you to end up in a chaotic state in terms of your personal progress than succeeding. If I wanted to by an Astronaut, then I would have to take exams, be physically in shape, mentally in shape, have money, be smart, be strong, have the right guidance, be born in the right country, at the right time etc. If just one of those possibilities doesn’t work out then I don’t get what I want. That’s life. Working through the weeds to ensure entropy is prolonged. Finding the right path in life is all about creating order for yourself and avoiding chaos at all costs.